Is there a lot of SEO that relies on 'like' or '+1' spam? Because that's the more apt comparison. Particularly when you consider the implementation of even a t

Is there a lot of SEO that relies on 'like' or '+1' spam? Because that's the more apt comparison. Particularly when you consider the implementation of even a trivial 'karma' system. The very creation of a network of mannequins would seem to run counter to the big goal of most SEO (traffic, now) as the mannequins would require months-to-years of seemingly-valid traffic of build-up to become relevant and then a very slow-and-cautious release of bookmarks to the desired spam to even attempt to avoid detection and thus nullification of all the preceding effort. And the user-expectation of such a search would be heavily weighted to prior personal activity [1]. So even if mannequins were successfully pumping bookmarks to promote some site that just scraped stack-exchange, if you and I were bookmarking stack-exchange, we should always get the real links bubbling to the top. [1] Yes, this would raise a lot of the same "echo chamber" concerns that people have with Google search, but if it matches the user expectation, I don't see a problem with it.